To report insurance fraud, contact one of three places: your insurance company’s fraud department, the National Insurance Crime Bureau (NICB) at 1-800-TEL-NICB (1-800-835-6422), or your state’s insurance fraud bureau. The NICB accepts anonymous tips by phone and online, which makes it the easiest starting point if you’re not sure who should hear about it.1National Insurance Crime Bureau. Report Fraud For fraud against Medicare or Medicaid, report to the Department of Health and Human Services Office of Inspector General at 1-800-HHS-TIPS (1-800-447-8477).2U.S. Department of Health and Human Services Office of Inspector General. Submit a Hotline Complaint
Where to Send Your Report
Your Insurance Company
Most large insurers run a Special Investigative Unit (SIU) staffed with trained fraud professionals who work separately from the regular claims team.3National Insurance Crime Bureau. Prevent Fraud and Theft The fraud hotline number is usually printed on your policy documents, the insurer’s website, or the back of your insurance card. This is the right first call when the suspicious claim, application, or provider bill is tied to a policy you can identify.
When you submit the report, include specific dates, policy or claim numbers, and any documentation you’ve gathered. Expect investigators to come back with questions, and expect them to ask for photos, receipts, or a recorded statement. Insurers also share information with the NICB, which lets them cross-reference suspicious claims across multiple carriers to spot patterns no single company could see on its own.4National Insurance Crime Bureau. Investigations
The National Insurance Crime Bureau
The NICB functions as a central clearinghouse for insurance fraud tips. Call 1-800-TEL-NICB or file through the tip form on their website. You are not required to give your name, though anonymity may limit investigators’ ability to come back to you for details.1National Insurance Crime Bureau. Report Fraud
The NICB is not a law enforcement agency. It investigates suspicious activity and works alongside insurers, law enforcement, and prosecutors to build cases.3National Insurance Crime Bureau. Prevent Fraud and Theft It is a good route when you don’t know which insurer is involved or you suspect the fraud touches more than one carrier.
State Fraud Bureaus
Most states run a dedicated insurance fraud bureau, and every state has an insurance department that accepts consumer complaints.5National Association of Insurance Commissioners. Insurance Departments You can typically file through an online portal, by phone, or by mail. State bureaus tend to prioritize cases involving large financial losses, organized fraud rings, or repeat offenders, and they may refer prosecutable cases to the state attorney general or a local district attorney. Take this route if your insurer isn’t acting on a report you’ve already filed, or if the activity looks like part of a larger scheme.
Federal Agencies
Federal agencies handle fraud that targets government insurance programs or crosses state lines. The FBI is the primary federal agency investigating health care fraud for both federal and private insurance programs.6Federal Bureau of Investigation. Health Care Fraud For Medicare or Medicaid fraud specifically, go to HHS OIG at 1-800-HHS-TIPS or their online tip portal.2U.S. Department of Health and Human Services Office of Inspector General. Submit a Hotline Complaint HHS OIG works with the Department of Justice and the Centers for Medicare and Medicaid Services to enforce federal fraud and abuse laws.7U.S. Department of Health and Human Services Office of Inspector General. Fraud and Abuse Laws
What to Gather Before You File
A report backed by specifics is much more likely to trigger an investigation than a vague suspicion. Write down dates, times, locations, and the names of everyone involved while your memory is fresh. If a staged accident is involved, note whether the witnesses seemed to know the driver and whether the damage matched the story. Small details that feel irrelevant to you can help investigators connect events.
Photos and video strengthen a report substantially. Take pictures of damage, injuries, or documents when you can do so safely. For inflated repair bills, a second estimate from a reputable shop gives investigators a comparison point. For medical fraud, keep every bill, diagnosis, and treatment plan; discrepancies between what was billed and what was actually done are exactly what investigators look for.
Social media and public records are worth a look. People claiming disabling injuries sometimes post activity that contradicts their statements, and a quick search may show whether the same person has been involved in similar incidents before. You are not trying to build a prosecutable case yourself. You are collecting enough that the people who do investigate have something solid to work with.
What Happens After You File
Timelines vary widely. A straightforward case involving a single inflated claim might resolve in a few weeks. An organized fraud ring across multiple states can take months or years to unravel. You generally won’t get regular progress updates. Fraud investigations are confidential, and agencies are limited in what they can share with tipsters.
If you filed with your insurer, expect follow-up questions and respond promptly, because delays on your end stall the investigation. If you filed with a state bureau or federal agency and haven’t heard anything after several weeks, a brief follow-up call is reasonable. Avoid discussing the case with anyone outside the investigation, especially on social media, since that can compromise the inquiry or alert the people being looked at.
Keep copies of every piece of correspondence: emails, letters, phone notes, and any reference or case numbers you receive. If the case ends up in court or you’re asked to give a statement, that record matters.
Protections If You’re Worried About Retaliation
Federal whistleblower laws prohibit employers from retaliating against workers who report fraud. The Department of Labor defines retaliation broadly to include firing, demotion, reduced pay or hours, and denial of overtime or promotions.8U.S. Department of Labor. Whistleblower Protections These protections cover fraud and financial issues, health insurance concerns, and other categories. Most states have their own whistleblower statutes on top of the federal ones, and many states also grant immunity from civil liability to people who report suspected insurance fraud in good faith.
When the fraud targets a federally funded program like Medicare or Medicaid, the False Claims Act adds another option. Under this law, private citizens can file a qui tam lawsuit on behalf of the federal government.9Department of Justice. The False Claims Act If the government takes over the case and recovers money, the whistleblower receives between 15 and 25 percent of the proceeds, depending on how much they contributed. If the government declines to intervene and the whistleblower pursues the case independently, the share is between 25 and 30 percent.10Office of the Law Revision Counsel. 31 U.S. Code 3730 – Civil Actions for False Claims
Deadlines to Know
There is no hard deadline for reporting suspected fraud to your insurer, the NICB, or a state fraud bureau. Report as soon as you have enough to describe a credible concern. Evidence degrades over time; witnesses forget and records get discarded.
Formal deadlines do apply to a qui tam lawsuit under the False Claims Act. The statute of limitations runs either six years from the date of the fraud or three years from the date the government knew or should have known about the violation, whichever is later. No lawsuit can be filed more than ten years after the violation, regardless of when the government learned about it.11Office of the Law Revision Counsel. 31 USC 3731 – False Claims Procedure Qui tam cases are complex and require an attorney. If you think you have evidence of fraud against a federal program, talk to a lawyer well before any deadline gets close.
A Note on False Reports
Knowingly filing a false fraud report can backfire. Fabricated allegations can expose you to criminal charges for filing a false report and to civil liability for defamation. The legal protections above cover reports made in good faith, meaning you genuinely believed fraud was occurring based on the information you had. You don’t have to be right. You do have to be honest. If you’re unsure whether what you’ve seen actually counts as fraud, call your state insurance fraud bureau or an attorney before filing a formal report. Getting guidance first costs nothing and prevents a mistake that’s hard to undo.